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OLEGan [10]
3 years ago
5

Systems w/ substitution y=4x+6 & y=-5+21

Mathematics
1 answer:
Law Incorporation [45]3 years ago
7 0
So basically what you would is u would plug the first equation into the second equation. -5x+21=4x+6
                      -21      -21
-5x=4x-15
-4x   -4x
-9x=-15
-9x/-9=15/-9
x=-1.66
then you would plug x back into the equation to get your y value
y=4(-1.66)+6
y=6.64+6
y=12.64



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